What Does Rat Poop Look Like?
Rat poop usually looks like dark, oval or capsule-shaped pellets. Fresh rat droppings are often dark brown or black, slightly shiny and firm. Older droppings become dull, dry, greyish and crumbly.
If you have found suspected rat droppings in a kitchen, loft, basement, garden, bin store or commercial premises, take clear photos and avoid disturbing the area before cleaning.
How Bon Accord identifies rat activity
Bon Accord uses an evidence-led inspection process. We do not simply look at droppings in isolation. We assess the wider pattern of activity, the likely entry route and the conditions that may allow rats to return.
Droppings and freshness
We assess the size, shape, colour, texture and location of droppings to help identify whether the activity is likely to be rats, mice or another pest.
Routes and entry points
We check wall edges, pipe routes, kitchen voids, lofts, drains, airbricks, external gaps and service penetrations to understand how rodents may be entering.
Control and prevention
Where rat activity is confirmed, we advise on treatment, monitoring, proofing, drainage risks and practical steps to reduce repeat activity.
Rat poop size: how big are rat droppings?
Rat droppings are normally much larger than mouse droppings. In London properties, the most common rat involved in building infestations is usually the brown rat, which tends to leave thicker, heavier-looking droppings.
| Pest | Typical dropping size | What it looks like |
|---|---|---|
| Mouse | Around 3–8 mm | Small, dark, rice-like, often pointed. |
| Roof rat / black rat | Around 10–13 mm | Slimmer, sometimes curved or tapered. |
| Brown rat / Norway rat | Around 12–25 mm | Larger, thicker, capsule-shaped and often blunt-ended. |
Rat droppings vs mouse droppings
Rat droppings
Larger, thicker and more noticeable. Often found in repeated routes, clusters or protected areas near food, water, drains, lofts, basements or building defects.
Mouse droppings
Smaller, narrower and more rice-like. Often scattered inside drawers, cupboards, behind appliances and around kitchen edges.
Place a coin or ruler next to the droppings and send a clear close-up plus a wider location photo. This helps distinguish rats from mice and shows where the route may be.
Where do you usually find rat poop?
Kitchens
Behind fridges, under sinks, behind washing machines, inside lower cupboards, behind kickboards and near pipework or drain connections.
Lofts and voids
On insulation, around pipe routes, near wall cavities, below roof defects and around stored items where rats may travel quietly at night.
External routes
Near drains, gullies, manholes, airbricks, sheds, bins, basement lightwells, garden walls and commercial waste areas.
Fresh vs old rat droppings
Fresh rat droppings
- Dark brown or black
- Slightly glossy
- Firm rather than dusty
- Often found with new smear marks, gnawing or noises
Old rat droppings
- Dull, dry or greyish
- Crumbly or dusty
- May be from previous activity
- Still important if new droppings reappear after cleaning
Image guide: signs around rat droppings
Fresh rat droppings
Fresh droppings are usually dark, firm and slightly shiny. Repeated fresh droppings suggest recent or ongoing rat activity.
Droppings and activity signs
Droppings found with marks, debris or disturbed areas can help identify where rats are travelling or entering the property.
Hidden rat routes
Kitchen plinths, appliance voids, pipe routes and wall edges are common places for droppings, smear marks and hidden entry points.
Are rat droppings dangerous?
Rat droppings can present a hygiene risk because rodents may contaminate areas with urine, droppings and saliva. The risk is higher in kitchens, bedrooms, lofts, nurseries, restaurants, stockrooms, workplaces and vulnerable settings.
Do not dry sweep or vacuum droppings. Disturbing contaminated dust can make cleaning less safe. If there are many droppings, a strong odour, a dead rodent, food contamination or a business premises involved, arrange professional help.
How to clean rat droppings safely
Before cleaning
- Keep children and pets away
- Take clear photos for identification
- Do not dry sweep or vacuum
- Wear disposable gloves
- Ventilate the area if possible
Cleaning method
- Spray droppings and surrounding surfaces with disinfectant
- Allow time for the product to work
- Remove with disposable paper towels
- Bag waste safely
- Disinfect surfaces and wash hands thoroughly
Rat poop in rental and commercial properties
Rental property
Tenants should take photos and report the issue to the landlord or managing agent. Responsibility can depend on the cause, including housekeeping, structural gaps, drains, broken airbricks or communal waste areas.
Commercial premises
Restaurants, cafés, food shops, hotels, offices, warehouses and managed buildings should act quickly, protect stock, record the issue and arrange professional inspection and control.
Quick answer: how to identify rat poo
Rat poo usually looks like dark, oval or capsule-shaped pellets. Fresh rat droppings are often dark brown or black, slightly shiny and firm. Older droppings become dull, dry, greyish and crumbly. They are normally much larger than mouse droppings and are often found in clusters along regular rat routes.
Size and shape
Rat droppings are larger than mouse droppings and often look like small dark capsules, olives or coffee beans.
Fresh or old
Fresh droppings are darker and slightly shiny. Older droppings become dry, dusty, lighter and more crumbly.
Where they appear
Common areas include kitchens, lofts, under units, near drains, behind appliances, bin stores and wall-floor edges.
FAQ: What does rat poop look like?
What does rat poop look like?
Rat poop usually looks like dark, oval or capsule-shaped pellets. Fresh droppings are usually dark and slightly shiny, while older droppings become dull, dry and crumbly.
How big is rat poop?
Rat poop is normally much larger than mouse poop. Depending on the rat species, it may be roughly 10–25 mm long.
Is rat poop black?
Fresh rat poop is often dark brown or black. Older droppings can fade to a greyish, dusty or dull colour as they dry out.
What is the difference between rat poop and mouse poop?
Rat poop is larger, thicker and more capsule-shaped. Mouse poop is smaller, narrower and often looks like dark grains of rice.
Where is rat poop usually found?
Rat poop is commonly found behind kitchen units, under sinks, in lofts, basements, bin stores, gardens, sheds, near drains, along walls and around pipework.
Does one rat dropping mean an infestation?
One dropping means a rodent may have been present, but it does not confirm the scale. Fresh or repeated droppings suggest active rodent activity.
Can I send a photo for identification?
Yes. Send a clear close-up photo, a wider location photo and a size reference such as a coin or ruler where possible.
What does rat poop look like?
If you come across rat poop on your property, it’s essential that you clean it the right way. Rats spread numerous nasty pathogens via their faeces. If you disturb rat poop while cleaning it up, you could inadvertently send contaminated particles into the air. If you then breathe these in, you run the risk of inhaling a deadly virus. Pets and young children are particularly vulnerable to the toxins found in rat droppings. If you have any pets or young children living with them, keep them well away from any rat poop you find. Before cleaning rat poop, ensure the area is well ventilated. Ideally, you should open a window and wait for an hour or two before you start cleaning. You should always wear a mask or face covering and gloves when cleaning it away. If you have access to a mask with a HEPA-filter, this will offer the best protection possible. But any kind of face covering is better than attempting a cleanup without any protection at all.Rat Poop (Rat Droppings) – Rat poop images
